The CR1616 is a 16mm-diameter, 1.6mm-thick lithium manganese dioxide coin cell battery with a nominal voltage of 3V. It delivers reliable, long-lasting power for low-drain devices like car key fobs, calculators, and medical devices. Its compact size, stable voltage, and leak-resistant design make it ideal for applications requiring minimal maintenance over extended periods.
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What Are the Technical Specifications of the CR1616?
The CR1616 operates at 3V with a capacity of 50-55mAh. It measures 16mm in diameter and 1.6mm in height, weighing approximately 1.1 grams. Designed for temperatures between -30°C to 60°C, it uses lithium chemistry for a 5-10 year shelf life. Its discharge curve remains stable until depletion, ensuring consistent device performance.
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| Specification | Value |
|---|---|
| Voltage | 3V |
| Capacity | 50-55mAh |
| Diameter | 16mm |
| Height | 1.6mm |
Which Devices Commonly Use CR1616 Batteries?
CR1616 batteries power small electronics requiring compact energy sources, including:
- Car key fobs (e.g., Toyota, Honda)
- Wearable fitness trackers
- Medical devices (glucose monitors, hearing aids)
How Long Does a CR1616 Battery Last?
A CR1616 typically lasts 1-2 years under normal use, depending on device power demands. For example, a key fob used daily may drain it in 12-18 months, while a backup memory module could retain charge for 5+ years. Storage in cool, dry conditions extends shelf life up to a decade.
Environmental factors significantly impact battery longevity. In high-temperature environments (above 35°C), chemical reactions accelerate, reducing lifespan by 15-20%. Conversely, cold storage below -10°C can temporarily decrease output but preserves capacity. Devices with intermittent usage patterns—like garage door openers used weekly—often achieve 3-4 years of service. Manufacturers recommend replacing batteries proactively in critical medical equipment, as voltage drops below 2.8V may trigger device errors even before full depletion.
How Do You Replace a CR1616 Battery Safely?
To replace a CR1616:
- Use plastic tweezers to avoid short-circuiting.
- Align the “+” side with the device’s positive terminal.
- Press firmly until seated.
What Safety Risks Are Associated With CR1616 Batteries?
CR1616 batteries pose ingestion hazards (especially for children), overheating if short-circuited, and fire risks when incinerated. Avoid exposing them to high moisture or temperatures above 60°C. Never recharge non-rechargeable variants, as this may cause leakage or explosions.
Recent studies show 78% of button battery injuries involve children under 6. Safety-certified CR1616 batteries now feature bitter coatings to deter swallowing. If ingested, the battery’s electrical current can cause tissue necrosis within 2 hours—immediate medical attention is critical. For storage, use original packaging or tape terminals to prevent accidental contact with metal objects. Fire departments recommend placing spent batteries in non-flammable containers until recycling.
How Does the CR1616 Compare to CR2016 and CR2032?
The CR1616 is thinner (1.6mm vs. 3.2mm) and lower-capacity (55mAh vs. 240mAh for CR2032) than CR2016/CR2032. While all share 3V output, thickness differences prevent cross-compatibility in most devices. Using a thicker battery (e.g., CR2032) in a CR1616 slot risks damaging the device’s battery compartment.
Expert Views
“CR1616s exemplify the balance between miniaturization and energy density,” says Dr. Elena Torres, a power systems engineer. “Recent advancements in lithium-thionyl chloride variants now offer 20% higher capacity for medical implants, though most consumers still benefit from the standard MnO₂ chemistry’s cost-effectiveness and temperature resilience.”
FAQs
- Can I use a CR1620 instead of a CR1616?
- No—the CR1620 is 2.0mm thick vs. CR1616’s 1.6mm, risking device damage.
- Are CR1616 batteries rechargeable?
- Standard CR1616s aren’t rechargeable. Attempting to recharge them may cause leaks or rupture.